[Accessibility] Renderring image using QT + eglfs and OpenGL

[Frederik Gladhorn]

Please use interest at qt-project.org for general requests about using Qt.

Cheers,
Frederik

On lørdag 26. november 2016 10.26.36 CET Ambika wrote:
> Hii,
> 
> I'm running the application to display the sequence of the image using Qt +
> eglfs as well as OpenGL, below are the observations.
> 
> When using Qt5 + eglfs:
> i. Frame rate is around 56fps with 800 * 480 resolution display.
> ii.Frame rate is around 23fps with 1280 * 720 resolution display.
> iii.Frame rate is around 11fps with 1920 * 1080 resolution display.
> iv.CPU usage for above three cases is 99%.
> 
> When using OpenGL:
> i. Frame rate is around 56fps with 800 * 480 1280 * 720 and 1920 * 1080
> resolutions. ii.CPU usage slightly increases with resolution from around
> 10% to 18%.
> 
> Whats affecting Frame rate in Qt5 and how can I increase the frame rate and
> improve CPU performance.
> 
> I'm new to Qt as well as image processing. Kindly let me know your thoughts
> on this to solve. Thanks in advance.
> 
> Regards,
> Ambika